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(No ModeL) P. O. SOLIE.

GUT-OFF VALVE.

No. 327,902. Patented Oct. 6, 1885.

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PETER O. SOLIE, OF PORTLAND, DAKOTA TERRITORY.

CUT-OFF VALVE.

SPECIFICATION forming part of Letters Patent No. 327,902, dated October 6. 1885.

Application filed March 27, 1885.

To all whom it may concern:

Be it known that I, PETER O. SoLrE, of Portland, in the county of Traill, Dakota Territory, have invented a new and useful Improvement in Gut-Off Valves, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 represents a plan view of a valvechest with my improvements attached. Fig. 2 is a sectional view showing position when the slide-valve opens the steam-port. Fig. 8 is a like view showing position when slide-valve is nearly at end of stroke. Fig. 4 is a similar view showing position when slide-valve is at end of stroke and steam cut off.

My invention relates to slide-valves; and it consists in a device adapted to be attached to the slide-valves of steamengines, which cut off the steam from the cylinder on any part of its stroke, thus permitting the use of steam expansively, which effects a great saving of fuel for the engines.

To enable others skilled in the art to make and use my invention, I will now proceed to describe the exact manner in which I have carried it out.

Some of the engines now in use employ steam expansively; but the valve-gears connected therewith are very complicated and expensive, and for these reasons are not extensively used. By the use of means herein shown and described I am enabled to provide a simple device capable of attachment to the common slide-valves of almost any engine, and dispensing with the costly valve-gears referred to.

In the said drawings, A represents a valvechest of any well-known form, and composed of any suitable material. The valve-chest is also provided with steam-ports a a and exhaust-port b, as shown in Figs. 2, 8, and 4.

B represents a slide-valve of ordinary construction, and operating in the usual manner. The valve B is attached to one end of the valvestem 0, the opposite end of the stem being connected to a suitable eccentric (not shown) on the engine, which operates the valve to open or close the ports.

Secured to the valveohest A, and passing longitudinally through the same, is a rod, D, provided with transverse projections or stops Serial No. 160,307 (NomodeL) d d, which engage a vertical rod, e, and operate the cut-off attachment, as I shall hereinafter describe.

The slide-valve B is provided on its upper surface with an enlargement, c, to which is pivotally secured the cutoff attachment E. This attachment consists, essentially, of the longitudinal bars 9 g, which are pivotally secured to the slide-valve and the transverse bars h h, the general shape of the attachment conforming to the size and configuration of the valve. The longitudinal bar 9 has projecting upwardly from its surface a pin, 6, adapted to engage the stops d, before described.

From this description it is manifest that when the valve-stem G is moved it carries with it the slide-valve and also the cut-off attachment. Just as the piston has nearly made its full stroke, and the port a has been uncovered, the pin e on the cut-off attachment, coming in contact with the stop (1, causes one end of the attachment to be thrown downward and closes the port a. This position is maintained on the return-stroke and until the port b has been uncovered, and the pin 6 strikes against the stop d and closing the port I), as in the former case.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with a slide-valve, of a rectangular frame or cut-off device pivoted thereto at or near its center, a pin secured to the cut-off, and suitable stops adapted to rock the cut-off to close the ports, substantially as herein described.

2. A cut-off attachment pivoted to and inelosing a slide-valve and suitable stops for changing the position of the cutoff and there by close the ports, substantially as herein described.

3. The valve-chest A, provided with a valvestem, 0, a rod, D, and suitable stops (1 d, secured thereto, in combination with a slidevalve, B, and inclosing cut-off pivoted thereto, and a pin, 0, adapted to engage the stops, substantially as and for the purpose described.

PETER O. SOLIE.

Witnesses.

F. L. KRAYENBUHL, O. L. TUFTY. 

